Thanks! It was quite hard to find the rom but I finally got it and it works perfectly. This game is damn hard but it's so great to discover Super Mario Bros in a hard way :D

8 Jul
18:00 2015

The game freez when I beat the game completely without using warp zone... :(

26 Jul
9:44 2015

how i can make a achievment

3 Aug
10:30 2015

DerKarim: http://retroachievements.org/faq.php#faq6

17 Sep
21:08 2015

The four end-game achievements should work now.

24 Sep
15:04 2015

hi can i have a save for there rom pgj posted thats at the final bowser without using warps at all bc i played using the rom Kasumariii suggested but it freezes

26 Jan
16:28 2016

it freezes for me too after i beat the game without using warps... I used "Super Mario Bros 2 (Lost Levels) (Unl)"

23 May
20:17 2016

Heads up use the rom from the mediafire link pgj put in his comment to unlock World 9

5 Dec
18:35 2017

To go to world 9 without freezing, use the rom Super Mario Bros. 2 (J) (Kaiser) [p1].nes, It is full of defects, but it is the only form I found

12 Dec
4:28 2017

"Hack" tag applied because while this is a real game it was not released on a cartridge in any region, and this set is designed around a patched ROM.

25 Jul
18:25 2018

Added working version and more achievements. Checksum is 77f5010ca6c336f652aa670767bc9ab9

30 Jul
5:27 2018

Special thanks to AlluminumMallard, Xymjak and BenGhazi for reporting bugged cheevos. You guys helped very much!

31 Jul
2:55 2018

FDS version presumed working (tested partially).

31 Jul
7:24 2018

Next and final revision wave will be on Aug 15 approx. So get ready to get 8 stars and beat worlds A-D to make the final rush to 800 points.

16 Aug
4:42 2018

Revision is postponed to the end of month. So many ideas in mind so maybe there'll be a bonus set for this game too (for series "no death", "all coins" and "kill Bowser with fire" in each world).

15 Oct
18:53 2018

For anyone who is curious, the FDS version is now supported and working!

18 Oct
13:00 2018

RANES 0.014 required. Also, revision is almost done. New achievements will be pushed to the core from 12:00 to 16:30 GMT tomorrow. When you see max points is less then 800, get ready (new achievements will come in one hour).

25 Oct
17:32 2018

"Bye, Brittle Phony! X" is insane. I don't think I've ever had to spend this much time before on a 2 point achievement.

26 Oct
1:09 2018

^ I can agree, that one corridor demands so much precise movement and timing, even though the game is already unforgiving